| Name | CVE-2021-20245 |
| Description | A flaw was found in ImageMagick in coders/webp.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2672-1, DLA-3429-1 |
| Debian Bugs | 1013282 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| imagemagick (PTS) | jessie, jessie (lts) | 8:6.8.9.9-5+deb8u26 | fixed |
| stretch (security) | 8:6.9.7.4+dfsg-11+deb9u14 | fixed |
| stretch (lts), stretch | 8:6.9.7.4+dfsg-11+deb9u19 | fixed |
| buster | 8:6.9.10.23+dfsg-2.1+deb10u1 | vulnerable |
| buster (security) | 8:6.9.10.23+dfsg-2.1+deb10u7 | fixed |
| bullseye | 8:6.9.11.60+dfsg-1.3+deb11u2 | fixed |
| bullseye (security) | 8:6.9.11.60+dfsg-1.3+deb11u3 | fixed |
| bookworm | 8:6.9.11.60+dfsg-1.6 | fixed |
| bookworm (security) | 8:6.9.11.60+dfsg-1.6+deb12u1 | fixed |
| trixie | 8:6.9.12.98+dfsg1-5 | fixed |
| sid | 8:6.9.12.98+dfsg1-5.2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/ImageMagick/ImageMagick/issues/3176
ImageMagick: https://github.com/ImageMagick/ImageMagick/commit/ffb683e62ddedc6436a1b88388eb690d7ca57bf2
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/a78d92dc0f468e79c3d761aae9707042952cdaca
[jessie] - imagemagick <not-affected> (vulnerable code was introduced later)